I'm having kinda the same problem. After suspend at work and resume after one hour at home, NM applet won't show my home networks at all - so no auto connection, of course. If I do enable/disable wifi or try to connect to one of work wifi AP (which of course is not there but is still in the list in NM applet), then NM applet refreshes AP list and I'm able to connect. I have nothing suspicios in pm-suspend log though. It might be nm-applet issue maybe...
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1448555 Title: network-manager does not autoconnect to wifi network after resume from suspend Status in network-manager package in Ubuntu: Confirmed Bug description: After upgrading to 15.04 network manager does not reconnect to the wifi network after resuming from a suspend to memory. Workaround: disable and re-enable wireless network -> connects immediately ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: network-manager 0.9.10.0-4ubuntu15 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 NonfreeKernelModules: nvidia wl ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Sat Apr 25 23:53:54 2015 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2013-05-17 (708 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64+mac (20130424) IpRoute: default via 10.1.0.254 dev wlan0 proto static metric 1024 10.0.0.0/8 dev wlan0 proto kernel scope link src 10.1.0.103 169.254.0.0/16 dev wlan0 scope link metric 1000 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true SourcePackage: network-manager UpgradeStatus: Upgraded to vivid on 2015-04-25 (0 days ago) nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH wlan0 wifi connected /org/freedesktop/NetworkManager/Devices/1 rsb_hs d8793959-2da1-4dc6-85ad-2dcf9e36e64b /org/freedesktop/NetworkManager/ActiveConnection/1 EC:88:92:61:E9:5F bt disconnected /org/freedesktop/NetworkManager/Devices/2 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- -- nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1448555/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp